Malicious Office (OLE) / .XLSX — malware analysis report

Static analysis result for SHA-256 ed2615dc3a9adfa6…

MALICIOUS

Office (OLE) / .XLSX

235.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 54649fa2a8306383f72c8d8299a40998 SHA-1: 873a48d89b2a2110c2edd79792fc1bdb13105d8d SHA-256: ed2615dc3a9adfa6b3c4f5257f9497349f0fcca5d17e9c94622bf7af4db68a3b
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to load remote content. The extracted URL is highly suspicious and likely serves as the initial download point for a secondary payload. No VBA macros were found to be executable, but the presence of the OLE vulnerability is sufficient to classify this as a malicious document.

Heuristics 2

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes